Understanding Inclusion Body Myopathy, Paget's Disease, and Frontotemporal Dementia

Characterization of Familial Myopathy and Paget Disease of Bone

Observational University of California, Irvine · NCT01353430

This study is trying to learn more about how changes in the VCP gene affect people with inherited muscle, bone, and brain conditions, by collecting health information and samples from families who have these issues.

Quick facts

Study typeObservational
Enrollment50 (estimated)
Ages18 Years and up
SexAll
SponsorUniversity of California, Irvine Academic / other
Locations1 site (Irvine, California)
Trial IDNCT01353430 on ClinicalTrials.gov

What this trial studies

This observational study focuses on families with inherited inclusion body myopathy, Paget disease of bone, and frontotemporal dementia, collectively known as IBMPFD, which is linked to mutations in the VCP gene. Researchers aim to gather biological specimens, medical histories, and questionnaire data from participants who may have these conditions or a family history of them. The study will help elucidate how VCP gene mutations contribute to the associated muscle, bone, and cognitive issues. Some participants may be invited for additional testing at the University of California, Irvine, including MRI and bone scans.

Who should consider this trial

Good fit: Ideal candidates include individuals with muscle and bone disorders, as well as their family members, particularly those with a history of VCP-related diseases.

Not a fit: Patients without any symptoms or family history related to inclusion body myopathy, Paget disease, or frontotemporal dementia may not benefit from this study.

Why it matters

Potential benefit: If successful, this research could lead to a better understanding of IBMPFD and improve diagnosis and treatment options for affected individuals.

How similar studies have performed: While this study explores a specific genetic condition, similar studies have shown promise in understanding genetic links to complex diseases, indicating potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Inclusion criteria include all individuals with a combination of medical problems including muscle and bone disease and their family members. Because historically VCP related muscle disease has been erroneously diagnosed with the following diagnoses, therefore if these patients also have a personal or family history of bone disease they will be considered eligible for the study:

Muscle disorders considered include:

* Limb Girdle Muscular Dystrophy
* Myopathy
* Inclusion body myopathy
* FSH (Facioscapular muscular dystrophy) without the mutation
* Scapuloperoneal muscular dystrophy
* Amyotrophic Lateral Sclerosis
* Non specific muscular dystrophy

AND

* Bone disorders including:

  * Paget disease of bone
  * Fibrous dysplasia
  * Diaphyseal medullary stenosis with malignant fibrous histiocytoma (DMS-MFH)
  * Non-specific bone disease

Eligible participants must also be:

* Subjects must to 18 years or older
* Subjects must to able to give consent
* Adult family members or spouses over the age of 18 of the affected individuals

Exclusion Criteria:

* Under the age of 18.

Individuals who report a different unrelated diagnosis will be excluded from the study. Testing to confirm different diagnoses will not be performed, instead patient will be questioned for this information and records will be obtained for confirmation of appropriate testing.

Those who are unable to provide consent for themselves will be excluded from participating in the study.

Where this trial is running

Irvine, California

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Inclusion Body Myopathy With Early-onset Paget Disease and Frontotemporal DementiaPaget Disease of BoneFrontotemporal DementiaMyopathyIBMPFD - Inclusion Body Myopathy associated withPaget's disease of bone and Frontotemporal DementiaVCP gene - Valosin-containing protein gene
Last reviewed 2026-06-10 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.